CN106481694A - Fluid drive apparatus, electric machine assembly and its centrifugal friction clutch - Google Patents

Fluid drive apparatus, electric machine assembly and its centrifugal friction clutch Download PDF

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Publication number
CN106481694A
CN106481694A CN201510856624.8A CN201510856624A CN106481694A CN 106481694 A CN106481694 A CN 106481694A CN 201510856624 A CN201510856624 A CN 201510856624A CN 106481694 A CN106481694 A CN 106481694A
Authority
CN
China
Prior art keywords
centrifugal
friction clutch
loadwheel
eccentric unit
centrifugal friction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510856624.8A
Other languages
Chinese (zh)
Inventor
李越
刘立生
王勇
张亚明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DECHANG ELECTRIC MACHINE (SHENZHEN) Co Ltd
Original Assignee
DECHANG ELECTRIC MACHINE (SHENZHEN) Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DECHANG ELECTRIC MACHINE (SHENZHEN) Co Ltd filed Critical DECHANG ELECTRIC MACHINE (SHENZHEN) Co Ltd
Publication of CN106481694A publication Critical patent/CN106481694A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/022—Units comprising pumps and their driving means comprising a yielding coupling, e.g. hydraulic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
    • F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
    • F16D43/18—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members with friction clutching members
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2786—Outer rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003—Couplings; Details of shafts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/108—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
    • F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
    • F16D2043/145—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members the centrifugal masses being pivoting
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

The invention discloses a kind of fluid drive apparatus, electric machine assembly and its centrifugal friction clutch, centrifugal friction clutch includes：Eccentric unit (24), eccentric unit (24) has for the sheathed ring (241) being fixed in rotary shaft (11) and some centrifugal films (242) being arranged on sheathed ring (241), and the end of centrifugal film (242) is free end；It is sheathed on the loadwheel (26) of eccentric unit (24) periphery, when eccentric unit (24) is rotated with rotary shaft (11), the free end of centrifugal film is radially opened, and abuts the inwall of loadwheel, drives loadwheel rotation using frictional force.Above-mentioned centrifugal friction clutch, frictional force between eccentric unit and loadwheel and the rotating speed of rotary shaft square proportional, in the slow-speed of revolution, relative slip between centrifugal film and loadwheel, reduce rotary inertia and starting load torque that rotary shaft is subject to, the situation of vibration, noise and startup failure during minimizing electric motor starting.

Description

Fluid drive apparatus, electric machine assembly and its centrifugal friction clutch
Technical field
The present invention relates to fluid driving equipment technical field, more particularly to a kind of fluid drive apparatus, motor Component and its centrifugal friction clutch.
Background technology
In fluid drive apparatus, such as in blower fan, pump, motor is connected with impeller, is driven by motor operation Wheel rotation.But when monophase machine starts, motor torque is little and fluctuates greatly, and impeller is inactive state, This causes motor bear larger rotary inertia and starting load torque so that vibrate during electric motor starting, The situation of electric motor starting failure can even occur when serious.
The startup method of monophase machine is first allowed motor turn over, then gradually carries generally with friction starter Dynamic wheel rotation.At present, friction starter is made up of arc shape board and ring spring.Multi-disc arc shape board sets It is placed on impeller, and multi-disc arc shape board is located on same circle, ring spring is centered around the outer of multi-disc arc shape board Side；The end of the rotary shaft of motor is stretched in the hole that multi-disc arc shape board is surrounded.As the rotary shaft of motor turns Dynamic, ring spring applies restraining force to multi-disc arc shape board, rubs in order to produce between arc shape board and rotary shaft Wipe power.But, the frictional force that this structure is produced rises High variation less with rotating speed, is unfavorable for adjusting rotation Inertia and starting load torque, it is impossible to effectively improve vibration, noise and the startup existed during electric motor starting The situation of failure, the infringement to motor are larger.
Therefore, rotary inertia and starting load torque that rotary shaft is subject to how is reduced, reduces electric motor starting When vibration, noise and start failure, be those skilled in the art's problem demanding prompt solution.
Content of the invention
In view of this, the invention provides a kind of centrifugal friction clutch, to reduce what rotary shaft was subject to Rotary inertia and the load of detent torque, reduce electric motor starting when vibrating noise and avoid start failure. The invention also discloses a kind of electric machine assembly with above-mentioned centrifugal friction clutch and fluid drive apparatus.
For achieving the above object, the present invention provides following technical scheme：
A kind of centrifugal friction clutch, including：
Eccentric unit, the eccentric unit have for fixing sheathed ring on the rotating shaft and are arranged at institute The some centrifugal films on sheathed ring are stated, the end of the centrifugal film is free end；
The loadwheel of eccentric unit periphery is sheathed on, when the eccentric unit is rotated with the rotary shaft, The free end of the centrifugal film is radially opened, and abuts the inwall of the loadwheel, using friction Power drives the loadwheel rotation.
Preferably, in above-mentioned centrifugal friction clutch, also include keeper, for bearing described in axially position Carry wheel.
Preferably, in above-mentioned centrifugal friction clutch, the keeper is included for being fixed on the rotation Positioning shaft sleeve on axle and the first baffle being fixedly connected with the positioning shaft sleeve.
Preferably, in above-mentioned centrifugal friction clutch, the endoporus of the loadwheel is cylindrical hole, described fixed Position part also includes to be arranged at the one end of the loadwheel away from the first baffle, for being fixed on described turning Second baffle on moving axis.
Preferably, in above-mentioned centrifugal friction clutch, the keeper also includes solid with the second baffle The locating ring of fixed connection, the contact internal walls of the outer wall of the locating ring and the centrifugal film.
Preferably, in above-mentioned centrifugal friction clutch, the second baffle is integral type with the locating ring Structure.
Preferably, in above-mentioned centrifugal friction clutch, the eccentric unit is fixedly installed on the locating shaft Put.
Preferably, in above-mentioned centrifugal friction clutch, the positioning shaft sleeve is integrated with the first baffle Formula structure.
Preferably, in above-mentioned centrifugal friction clutch, the endoporus of the loadwheel is shoulder hole, described from Center portion part is located in the large diameter hole of the shoulder hole, the ladder end face of the shoulder hole and the centrifugation portion Part is away from the end face positioning contact of the first baffle.
Preferably, in above-mentioned centrifugal friction clutch, it is fixed to be provided with the inside of the centrifugal film of the eccentric unit Position briquetting；The ladder end contact of the end face of the positioning briquetting and the eccentric unit shoulder hole, institute State the end contact that the other end of positioning briquetting and the sheathed ring are connected the centrifugal film.
Preferably, in above-mentioned centrifugal friction clutch, the quantity of the centrifugal film is multiple and is uniformly arranged On the sheathed ring.
Preferably, in above-mentioned centrifugal friction clutch, the centrifugal film is set with the junction of the sheathed ring It is equipped with spring groove.
Present invention also offers a kind of electric machine assembly, including monophase machine, also includes centrifugal friction clutch, The centrifugal friction clutch is the centrifugal friction clutch as described in above-mentioned any one.
Preferably, in above-mentioned electric machine assembly, also include to be arranged in the rotary shaft of the motor, for limiting The locating part of impeller axial movement processed, the locating part are located at the centrifugal friction clutch dorsad electricity The side of the main body of machine.
Present invention also offers a kind of fluid drive apparatus, including driving wheel and electric machine assembly, the motor Component is the electric machine assembly as described in above-mentioned any one.
It can be seen from above-mentioned technical scheme that, in electric motor starting, eccentric unit is rotated with rotary shaft. In the rotating speed relatively hour of rotary shaft, as the centrifugal force that centrifugal film is subject to is little, the free end of centrifugal film is along footpath Less to outwardly degree, the frictional force between centrifugal film and loadwheel is less by even 0, centrifugation portion Part relative load slipping；With the increase of the rotating speed of rotary shaft, centrifugal film is increased by centrifugal action, The free end of centrifugal film is tilted to the axis direction away from sheathed ring, and eccentric unit is sheathed on loadwheel Interior in the hole, the centrifugal film of tilting are contacted with the hole wall of endoporus so that rubbing between eccentric unit and loadwheel Wipe power to be consequently increased, when frictional force is sufficiently large, eccentric unit drives loadwheel synchronous rotary.
By said structure, in electric motor starting, the rotating speed of rotary shaft is relatively low, eccentric unit and loadwheel Between centrifugal friction power less even without frictional force, as loadwheel is directly or indirectly fixed with impeller Connection, during electric motor starting, impeller remains static so that eccentric unit and load wheel shape during electric motor starting Become sliding friction pair, and then cause relative between fixture and loadwheel slip；Rotary shaft in motor Rotating speed increases, and the centrifugal force of centrifugal film increases, and the frictional force between eccentric unit and loadwheel also increases, Relative slippage between eccentric unit and loadwheel reduces until the two geo-stationary, passes through so as to motor Centrifugal friction clutch drives loadwheel synchronous rotary.The centrifugal friction clutch that the present invention is provided, centrifugation Frictional force between part and loadwheel and the rotating speed of rotary shaft square proportional, in the slow-speed of revolution (motor Start) when, relative slip between centrifugal film and loadwheel, reduce rotary inertia that rotary shaft is subject to and Starting load torque, vibration when reducing electric motor starting, noise and starts the situation of failure.
Electric machine assembly and fluid drive apparatus that the present invention is provided, due to above-mentioned centrifugal friction clutch, Also should be with same technique effect, this is no longer going to repeat them.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality Apply accompanying drawing to be used needed for example or description of the prior art to be briefly described, it should be apparent that, below Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art, On the premise of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the first structural representation of the electric machine assembly in the embodiment of the present invention；
Fig. 2 is the first cross-sectional schematic of the electric machine assembly in the embodiment of the present invention；
Fig. 3 is the assembling schematic diagram of the second baffle in the embodiment of the present invention and eccentric unit；
Fig. 4 is the structural representation of the eccentric unit in the embodiment of the present invention；
Fig. 5 is the structural representation of the blower fan in the embodiment of the present invention；
Fig. 6 is second structural representation of the electric machine assembly in the embodiment of the present invention.
Wherein,
Motor 1, rotary shaft 11, locating part 12, centrifugal friction clutch 2, keeper 20, First baffle 21, positioning shaft sleeve 22, second baffle 23, eccentric unit 24, sheathed ring 241, Centrifugal film 242, spring groove 243, positioning briquetting 25, loadwheel 26, locating ring 27, Impeller 3.
Specific embodiment
The invention discloses a kind of centrifugal friction clutch, with reduce rotary inertia that rotary shaft is subject to and Starting load torque, reduce electric motor starting when vibrating noise and avoid electric motor starting fail.The present invention is also Disclose a kind of electric machine assembly with above-mentioned centrifugal friction clutch and fluid drive apparatus.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing The every other embodiment obtained under the premise of going out creative work, belongs to the scope of protection of the invention.
Refer to the first structural representation of Fig. 1-Fig. 4, Fig. 1 for the electric machine assembly in the embodiment of the present invention； Fig. 2 is the first cross-sectional schematic of the electric machine assembly in the embodiment of the present invention；Fig. 3 is implemented for the present invention The assembling schematic diagram of second baffle and eccentric unit in example；Fig. 4 is the centrifugation portion in the embodiment of the present invention The structural representation of part.
A kind of centrifugal friction clutch is embodiments provided, including eccentric unit 24 and loadwheel 26. With sheathed ring 241 and centrifugal film 242, sheathed ring 241 is used for being fixed on rotary shaft 11 eccentric unit 24 On, centrifugal film 242 is arranged on sheathed ring 241, and the end of centrifugal film 242 is free end.Rotating When axle 11 is rotated, 24 concomitant rotation of eccentric unit, centrifugal film 242 receive centrifugal action, to away from set If the axis direction of ring 241 is tilted.Loadwheel 26 is sheathed on the periphery of eccentric unit 24, i.e. loadwheel 26 are contained in interior in the hole with endoporus, eccentric unit 24.When eccentric unit 24 is rotated with rotary shaft 11, The free end of centrifugal film 242 is radially opened, and abuts the inwall of loadwheel 26, using frictional force Loadwheel 26 is driven to rotate.
Centrifugal friction clutch provided in an embodiment of the present invention, when motor 1 starts, eccentric unit 24 with Rotary shaft 11 to rotate.In the rotating speed relatively hour of rotary shaft 11, due to being centrifuged that centrifugal film 242 is subject to Power is little, and the degree that the free end of centrifugal film 242 is radially opened is less, centrifugal film 242 and load Frictional force between wheel 26 is less by even 0, and 24 relative load wheel 26 of eccentric unit slides；With turn The increase of the rotating speed of moving axis 11, centrifugal film 242 are increased by centrifugal action, the free end of centrifugal film 242 Tilt to the axis direction away from sheathed ring 241, and eccentric unit 24 is sheathed on the endoporus of loadwheel 26 Interior, the centrifugal film 242 of tilting is contacted with the hole wall of endoporus so that eccentric unit 24 and loadwheel 26 it Between frictional force be consequently increased, when frictional force is sufficiently large, eccentric unit 24 drive loadwheel 26 with Step rotation.
By said structure, when motor 1 starts, the rotating speed of rotary shaft 11 is relatively low, eccentric unit 24 Less with the centrifugal friction power between loadwheel 26 even without frictional force, due to loadwheel 26 and impeller 3 Directly or indirectly be fixedly connected, during electric motor starting, impeller 3 remains static so that during electric motor starting from Between center portion part 24 and loadwheel 26, relative slip, forms sliding friction pair；Rotary shaft in motor 1 11 rotating speed increases, and the centrifugal force of centrifugal film 242 increases, between eccentric unit 24 and loadwheel 26 Frictional force also increases, and the relative slippage between eccentric unit 24 and loadwheel 26 reduces until the two phase To static, 26 synchronous rotary of loadwheel is driven by centrifugal friction clutch so as to motor.The present invention is implemented The centrifugal friction clutch that example is provided, the frictional force between eccentric unit 24 and loadwheel 26 and rotary shaft 11 rotating speed square is in ratio, at the slow-speed of revolution (motor 1 starts), centrifugal film 242 and loadwheel Between 26, relative slip, reduces rotary inertia and starting load torque that rotary shaft 11 is subject to, reduces Motor 1 start when vibrating noise and avoid start failure situation.
It is understood that what the end of centrifugal film 242 was not connected with sheathed ring 241 for centrifugal film 242 One end.Preferably, one end of centrifugal film 242 is connected with one end of sheathed ring 241, and centrifugal film 242 is remote From the end that one end of sheathed ring 241 is centrifugal film 242.It is of course also possible to centrifugal film 242 is arranged Outer surface in sheathed ring 241.
Further, the keeper also included for axially position loadwheel 26 provided in an embodiment of the present invention 20.By keeper 20 is arranged, the axially position to loadwheel 26 is served, it is to avoid loadwheel 26 Rock.
As shown in Figures 1 and 2, in the first embodiment, keeper 20 is included for being fixed on rotation Positioning shaft sleeve 22 on axle 11 and the first baffle 21 being fixedly connected with positioning shaft sleeve 22.Set by above-mentioned Put, first baffle 21 and positioning shaft sleeve 22 achieve the axially position to loadwheel 26, facilitate fixation The installation of part.When loadwheel 26 is assembled in rotary shaft 11, loadwheel 26 is towards assembly direction The end face of side is contacted with first baffle 21.
In the present embodiment, the endoporus of loadwheel 26 is cylindrical hole, in order to avoid loadwheel 26 is to dorsad Its assembly direction movement, keeper 20 also include the second baffle 23 for being fixed in rotary shaft 11, Second baffle 23 is arranged at the one end of loadwheel 26 away from first baffle 21.One end in loadwheel 26 First baffle 21 is set, and the other end arranges second baffle 23, and then it is fixed to realize the axial direction to loadwheel 26 Position.Preferably, the axial length of the endoporus of loadwheel 26 is identical with the axial length of eccentric unit 24, Eccentric unit 24 is allowd by first baffle 21 and 23 axially position of second baffle.
Keeper 20 also includes the locating ring 27 being fixedly connected with second baffle 23, the outer wall of locating ring 27 Contact internal walls with centrifugal film 242.As locating ring 27 is provided with, support is played to centrifugal film 242 and is made With, it is to avoid centrifugal film 242 is bent to the center of eccentric unit 24.
Preferably, locating ring 27 is integral type structure with second baffle 23.By above-mentioned setting, it is only necessary to Locating ring 27 is fixed with a relative rotation axle 11 in second baffle 23.Also, avoid Locating ring 27 is processed and installs respectively with second baffle 23, facilitates assembling.
In the present embodiment, eccentric unit 24 is fixedly installed on positioning shaft sleeve 22, by eccentric unit 24 Sheathed with positioning shaft sleeve 22, axial length is shortened, reduces the entire length of centrifugal friction clutch. Eccentric unit 24 can also be directly anchored in rotary shaft 11, here is no longer discussed in detail and is all protecting Within the scope of shield.
Further, positioning shaft sleeve 22 is integral type structure with first baffle 21.By positioning shaft sleeve 22 with First baffle 21 is set to integral structure, it is only necessary to by one in positioning shaft sleeve 22 and first baffle 21 Relatively rotate axle 11 to fix.Also, avoid positioning shaft sleeve 22 to be processed with first baffle 21 respectively And install, facilitate assembling.
As shown in Figures 5 and 6, in second embodiment, the endoporus of loadwheel 26 is shoulder hole, rank Terraced hole has the large diameter hole and small diameter bore being coaxially disposed.Eccentric unit 24 is located at the major diameter of shoulder hole In the hole, end face positioning of the ladder end face of shoulder hole with eccentric unit 24 away from first baffle 21 are contacted. As the endoporus of loadwheel 26 is shoulder hole, and small diameter bore passes through for rotary shaft 11.
Wherein, the keeper 20 in the present embodiment equally includes the positioning for being fixed in rotary shaft 11 Axle sleeve 22 and the first baffle 21 being fixedly connected with positioning shaft sleeve 22.
In the present embodiment, 242 inner side of centrifugal film of eccentric unit 24 is provided with positioning briquetting 25；Positioning The ladder end contact of the end face of briquetting 25 and shoulder hole, the other end of positioning briquetting 25 with sheathed Ring 241 connects the end contact of centrifugal film 242.By arranging positioning briquetting 25, to centrifugal film 242 To supporting role, it is to avoid centrifugal film 242 is bent to the center of eccentric unit 24.
As shown in figure 4, centrifugal film 242 is provided with spring groove 243 with the junction of sheathed ring 241.Logical Cross setting spring groove 243 so that centrifugal film 242 is reduced with the thickness of the junction of sheathed ring 241, more Centrifugal film 242 is conducive to be subject to centrifugal force and tilt.
In the present embodiment, spring groove 243 is located at centrifugal film 242 and the junction of sheathed ring 241 Inner side.Spring groove 243 can also be arranged at centrifugal film 242 outer with the junction of sheathed ring 241 Side.
Further, the quantity of centrifugal film 242 is multiple and is uniformly arranged on sheathed ring 241.Pass through Above-mentioned setting so that the frictional force between eccentric unit 24 and loadwheel 26 is uniformly distributed.Can also set Put at least one centrifugal film 242.
The embodiment of the present invention additionally provides a kind of electric machine assembly, including monophase machine 1, also includes centrifugal friction Clutch 2, centrifugal friction clutch 2 are the centrifugal friction clutch of any one as described above.Due to above-mentioned from Heart friction clutch has above-mentioned technique effect, and the electric machine assembly with above-mentioned centrifugal friction clutch also should With same technique effect, this is no longer going to repeat them.
For the ease of the axially position of impeller 3, electric machine assembly provided in an embodiment of the present invention also includes to arrange In the rotary shaft 11 of motor 1, for limiting the locating part 12 of the axial movement of impeller 3, locating part 12 Side positioned at the dorsad main body of motor 1 of centrifugal friction clutch 2.
As shown in Fig. 2 locating part 12 is set to nut, arrange and nut phase in the end of rotary shaft 11 The screw thread of cooperation.Locating part 12 can also be fixed in rotary shaft 11 by fixing screw；Acceptable Locating part 12 is set to jump ring, arrange with the draw-in groove for matching in the end of rotary shaft 11 etc., here No longer repeat one by one and all within protection domain.
The embodiment of the present invention additionally provides a kind of fluid drive apparatus, and which is in particular a blower fan, and which includes Impeller 3 and electric machine assembly, electric machine assembly are the electric machine assembly of any one as described above.Due to above-mentioned group of motors Part has above-mentioned technique effect, the blower fan with above-mentioned electric machine assembly also should with same technique effect, This is no longer going to repeat them.What deserves to be explained is, the fluid drive apparatus of the present invention can also be fluid pump Deng.
In this specification, each embodiment is described by the way of going forward one by one, and each embodiment is stressed The difference with other embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use The present invention.Multiple modifications to these embodiments will be aobvious and easy for those skilled in the art See, generic principles defined herein can without departing from the spirit or scope of the present invention, Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein, And it is to fit to the most wide scope consistent with principles disclosed herein and features of novelty.

Claims (17)

1. a kind of centrifugal friction clutch, it is characterised in that include：
Eccentric unit (24), described eccentric unit (24) have for being fixed on rotary shaft (11) Sheathed ring (241) and some centrifugal films (242) being arranged on sheathed ring (241), described The end of centrifugal film (242) is free end；
Be sheathed on eccentric unit (24) periphery loadwheel (26), when the eccentric unit (24) with When described rotary shaft (11) rotate, the free end of centrifugal film (242) is radially opened, and The inwall of the loadwheel (26) is abutted, and described loadwheel (26) rotation is driven using frictional force.
2. centrifugal friction clutch as claimed in claim 1, it is characterised in that also include keeper (20), For loadwheel described in axially position (26).
3. centrifugal friction clutch as claimed in claim 2, it is characterised in that keeper (20) Including the positioning shaft sleeve (22) for being fixed in the rotary shaft (11) and with the positioning shaft sleeve (22) The first baffle (21) being fixedly connected.
4. centrifugal friction clutch as claimed in claim 3, it is characterised in that keeper (20) Also include to be arranged at the one end of the loadwheel (26) away from the first baffle (21), for fixing Second baffle (23) in the rotary shaft (11).
5. centrifugal friction clutch as claimed in claim 4, it is characterised in that keeper (20) Also include the locating ring (27) being fixedly connected with the second baffle (23), locating ring (27) Outer wall and the centrifugal film (242) contact internal walls.
6. centrifugal friction clutch as claimed in claim 5, it is characterised in that second baffle (23) It is integral type structure with the locating ring (27).
7. centrifugal friction clutch as claimed in claim 3, it is characterised in that eccentric unit (24) It is fixedly installed on the positioning shaft sleeve (22).
8. centrifugal friction clutch as claimed in claim 3, it is characterised in that positioning shaft sleeve (22) It is integral type structure with the first baffle (21).
9. centrifugal friction clutch as claimed in claim 3, it is characterised in that loadwheel (26) Endoporus be shoulder hole, described eccentric unit (24) be located at the shoulder hole large diameter hole in, described The ladder end face of shoulder hole is fixed away from the end face of the first baffle (21) with the eccentric unit (24) Position contact.
10. centrifugal friction clutch as claimed in claim 9, it is characterised in that the eccentric unit (24) on the inside of centrifugal film (242), positioning briquetting (25) is provided with；Positioning briquetting (25) The ladder end contact of end face and the eccentric unit (24) shoulder hole, positioning briquetting (25) Other end be connected the end contact of the centrifugal film (242) with sheathed ring (241).
11. centrifugal friction clutches as claimed in claim 1, it is characterised in that centrifugal film (242) Quantity be multiple and be uniformly arranged on sheathed ring (241).
12. centrifugal friction clutches as described in any one of claim 1-11, it is characterised in that described Centrifugal film (242) is provided with spring groove (243) with the junction of sheathed ring (241).
A kind of 13. electric machine assemblies, including monophase machine (1), it is characterised in that also include centrifugal friction Clutch (2), centrifugal friction clutch (2) be as described in any one of claim 1-12 from Heart friction clutch.
A kind of 14. fluid drive apparatus, including driving wheel (3) and electric machine assembly, it is characterised in that institute Electric machine assembly is stated for electric machine assembly as claimed in claim 13.
15. fluid drive apparatus as claimed in claim 14, it is characterised in that also include to be arranged at institute State in the rotary shaft (11) of motor (1), for limiting the locating part (12) that impeller (3) is moved axially, Described locating part (12) are located at centrifugal friction clutch (2) dorsad described motor (1) main body Side.
A kind of 16. electric machine assemblies, including monophase machine, the monophase machine includes a rotor, its feature It is, also includes a centrifugal friction clutch, the centrifugal friction clutch includes relative monophase machine The eccentric unit that rotor is fixed and rotated with rotor, and a load connection, the eccentric unit include One centrifugation body, when the rotor rotates, the centrifugation body produces axial direction or footpath under the influence of centrifugal force To movement, pressure, and the frictional force produced using pressure is produced to load connection so as to the centrifugation body Drive load connection rotation.
A kind of 17. fluid drive apparatus, including driving wheel and electric machine assembly, it is characterised in that the electricity Thermomechanical components are electric machine assembly as claimed in claim 16, and the impeller passes through the centrifugal friction clutch Be connected with the monophase machine, the impeller be connected with the load connection or with the load connection It is structure as a whole.
CN201510856624.8A 2015-09-02 2015-11-27 Fluid drive apparatus, electric machine assembly and its centrifugal friction clutch Pending CN106481694A (en)

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CN2015105563943 2015-09-02

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CN201510856624.8A Pending CN106481694A (en) 2015-09-02 2015-11-27 Fluid drive apparatus, electric machine assembly and its centrifugal friction clutch
CN201510856741.4A Pending CN106487119A (en) 2015-09-02 2015-11-27 Fluid drive apparatus and its electric machine assembly

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US (1) US20170058904A1 (en)
JP (3) JP2017055646A (en)
KR (2) KR20170031044A (en)
CN (3) CN205544642U (en)
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DE (1) DE102016116385A1 (en)
MX (2) MX2016011373A (en)
TW (1) TWM542069U (en)

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CN109780091A (en) * 2017-11-15 2019-05-21 广东德昌电机有限公司 Centrifugal brake and shutter driver with centrifugal brake
CN112600351A (en) * 2020-12-05 2021-04-02 左小林 Dynamic fit transmission motor

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CN205226163U (en) * 2015-09-02 2016-05-11 德昌电机(深圳)有限公司 Fan, motor element and centrifugation friction clutch thereof

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GB456181A (en) * 1935-08-08 1936-11-04 British Belting & Asbestos Ltd Improvements in or relating to centrifugal clutches and brakes
FR1393131A (en) * 1964-05-11 1965-03-19 One-piece clutch device for small single-phase electric motors
DE3236450A1 (en) * 1981-10-02 1983-04-21 Mitsubishi Denki K.K., Tokyo Charging generator with coupling
SU1310538A1 (en) * 1984-06-14 1987-05-15 Николаевский Кораблестроительный Институт Им.Адм.С.О.Макарова Expanding damping clutch
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CN201944144U (en) * 2010-11-30 2011-08-24 张红军 Automatic centrifugal clutch for small gasoline engine and diesel engine
CN205226163U (en) * 2015-09-02 2016-05-11 德昌电机(深圳)有限公司 Fan, motor element and centrifugation friction clutch thereof

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Publication number Priority date Publication date Assignee Title
CN109780091A (en) * 2017-11-15 2019-05-21 广东德昌电机有限公司 Centrifugal brake and shutter driver with centrifugal brake
CN109780091B (en) * 2017-11-15 2021-12-17 广东德昌电机有限公司 Centrifugal brake and shutter drive with a centrifugal brake
CN112600351A (en) * 2020-12-05 2021-04-02 左小林 Dynamic fit transmission motor
CN112600351B (en) * 2020-12-05 2021-12-24 南阳微特防爆电机有限公司 Dynamic fit transmission motor

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JP2017058015A (en) 2017-03-23
BR102016020294A2 (en) 2017-03-07
DE102016116385A1 (en) 2017-03-02
KR20170031044A (en) 2017-03-20
MX2016011373A (en) 2018-03-01
TWM542069U (en) 2017-05-21
KR20170031042A (en) 2017-03-20
JP2017055646A (en) 2017-03-16
BR102016020295A2 (en) 2017-07-25
CN205544642U (en) 2016-08-31
JP3210898U (en) 2017-06-15
US20170058904A1 (en) 2017-03-02
CN106487119A (en) 2017-03-08
MX2016011374A (en) 2018-03-01

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Application publication date: 20170308